Dampening device for paper-calendering machines.



No. 746,655. PATENTE-D DEG.'15, 1903. W. G. ANDRUS.

DAMPENING DEVICE FOR PAPER GALENDERING MACHINES. APPLICATION FILED APR.16, um.

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PATENTED DEG. 15', 1903'. w. G. ANDRUS. DAMPEN-ING DEVICE. FOR-PAPERGALE-NDERING MACHINES.

APPLIGATION PI LED APR. 16, 1903.

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No. 746,655. I

UNITED STATES Patented December 15, 1903 P TENT rrrcs.

DAMPENING DEVICE FOR PAPER-CALENDERING MACHINES.

SPECIFICATION forming part of Letters Patent No. 746,655, dated December15,1903.

' Application filed April 16,1903. Serial No. 152,900. (No model.)

dampening devices for paper-calendering machines.

The objects of the invention are, first, to provide an improvedpaper-dampening device for calendering-machines by which the paper isproperly dampened and there is no liability of spraying or spotting thesame;

second, to provide an improved paper-dampening device forcalendering-machines by which the amount of moisture delivered to thepaper is under the perfect control of the operator; third, to provide animproved paper-dampening device for calendering-machines which iseffective for the purpose and at the same time simple in itsconstruction and easy to operate.

Further objects and objects relating to structural details willdefinitely appear from the detail description to follow.

I accomplish the objects of my invention by the devices and meansdescribed in the following specification.

The invention is pointed out in the claims.

A structure embodying the features of my invention is clearlyillustrated in the accompanying drawings, forming a part of thisspecification, in which Figure l is an end elevation view of a structureembodying the features of my invention, showing the relation of theparts, the calendering-rolls being illustrated in the GOIIVBH.

portions being broken away to show the relation of the parts.

In the drawings the sectional views are taken looking in the directionof the little This invention relates to improvements in arrows at theends of the section lines, and similar letters of reference refer tosimilar parts throughout the several views.

Referring to the lettered parts of the drawings, the frame or support Afor the calcudering-rolls is of the usual or any desired construction,the rolls being arranged in the usual or any desired form. I support myimproved dampening device in front of and adjacent to the first or toproll A of the stack, so that it delivers steam to the under side of thepaper an as it movesacross the sameas it is delivered to the roll A fromthe guideroller m.

I provide a steam-receptacle B, which is preferably of about the samelength as the calendering-rolls. The receptacle B isprovided with aremovable top or cover 0, which is adapted to fit the same in a mannerto effect a steam-tight joint. The top Cis formed withupwardly-converging sides with an opening Eat the top. I This opening iscontrolled by sliding covers ff, oneat each side. The cover 0 isstrengthened by suitable crosspieces gto prevent springing or warping ofthe sides. The receptacle is provided with a screen-partition C Thisscreen is supported by hoop-like ribs 2" to engage suitable sup ports onthe walls of the casing, so that the same is firmly supported. The meshof the screen 0 is very fine, so that it prevents any spray from thesteam-delivery pipe B pass ing therethrough. Steam is delivered into thereceptacle B by the pipe B, which'is provided with a suitable cock 0 tocontrol the same. The pipe 13 is slightly inclined away from thesupply-pipe b, so that the condensed steam will drip into theexhaust-pipe b, which is also provided with a cock 0. By themanipulation of these cocks c the amount of steam delivered through theperforations n of the pipe B is under the perfect control of theoperator. The receptacle B is provided with an inclined bottom, so thatthe condensed steam is delivered through the drippipe D. The pipe B,which is passed entirely through the receptacle, also serves as asupport for the same and is provided with projecting trunnions e at eachend, which are passed through suitable openings in the frame A of themachine. No additional support is required.

In operation the steam is deliveredinto the pipe B and through theperforations n into the lower chamber of the receptacle B. The screen Cprevents the same being forced directly against the paper m and preventsthe formation of a spray, which causes the objectionable Water spotsupon the paper. It also causes the even distribution of the steam overthe entire under surface of the paper as it. is passed above the openingE. By the manipulation of the sliding doorsf the opening may be adjustedto any width of paper. In reversing the paper, as is frequently done incalendering the same, the paper may in one operation be passed over oneside of the machine and the opposite side closed, and the paper whenreversed may be passed over the other side of the machine and the coversreversed. The result is that no excess of steam is delivered into theroom, and it is delivered upon the entire surface of the paper in aneven manner and in such quantities as may be desired, which is, ofcourse, a very desirable feature.

My improved paper-dampening device for calendering-machines also has theadvantage of being simple in its construction and easy to operate. Itmay be formed of sheet metal and is easily set up or disassembled.

I have illustrated and described the same in the form preferred by me onaccount of its simplicity in operation and economy in construction. I amaware, however, that it is capable of very considerable variation instructural details Without departing from my invention.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In a paper-dampening device for calendering-machines', thecombination of a receptacle B having a cover 0 with upwardly-convergingsides; an opening E in the top thereof; sliding covers f for saidopening; a removable screen-partition 0 within said receptacle; asteam-supply pipe B having perforations n in its upper side, arrangedbelow said partition, said supply-pipe being adapted to support saidreceptacle; supply and exhaust pipes; and a drip-pipe for saidreceptacle, all coacting for the purpose specified.

2. In a paper-dampening device for calendering-machines, the combinationof a receptacle B having a cover 0 with upwardly-converging sides; anopening E in the top thereof; sliding covers f for said opening; aremovable screen-partition 0 within said receptacle; a steam-supply pipeB having perforations n in its upper side, arranged below saidpartition; supply and exhaust pipes for said pipe B; stop-cocks for saidsupply and exhaust pipes; and a drip-pipe for said receptacle, allcoacting for the purpose specified.

3. In a paper-dampening device for calendering-machines, the combinationof a receptacle B having a cover G with upwardly-convergingsides; anopeningEin thetop thereof;

sliding covers ffor said opening; a screenpartition 0 Within saidreceptacle; a steamsupply pipe B having perforations n in its upperside, arranged below said partition; supply and exhaust pipes for saidpipe B; stop-cocks for said supply and exhaust pipes; and a drip-pipefor said receptacle, all coacting for the purpose specified.

4. In a paper-dampening device for calenderingmachines, the combinationof a receptacle B having a cover 0 with upwardly-converging sides; anopening E in the top thereof; sliding coversffor said opening; aremovable screen-partition 0 within said receptacle; a steam-supply pipeB having perforations 'n in its upper side, arranged below saidpartition, said supply-pipe being adapted to support said receptacle;supply and exhaust pipes for said pipe B; stop-cocks for said supply andexhaust pipes, all coacting for the purpose specified.

5. In a paper-dampening device for calendering-machines, the combinationof a receptacle B having a cover 0 with upwardly-converging sides; anopening E in the top thereof; sliding covers f for said opening; ascreenpartition 0 within said receptacle; a steamsupply pipe B havingperforations n in its upper side, arranged below said partition; supplyand exhaust pipes for said pipe B; stop-cocks for said supply andexhaust pipes, all coacting for the purpose specified.

6. In a paper-dampening device for calendering-machines, the combinationof a receptacle having upwardly-converging sides open at the top; anadjustable cover for said opening; a screen-partition within saidreceptacle; a steam-pipe having delivery-openings along the samearranged below said partition; supply andexhaust pipes for saiddelivery-pipe; means for controlling said supply and exhaust pipes; anda drip for said receptacle, for the purpose specified.

7. In a paper-dampening device for calendering-machines, the combinationof a receptacle open at the top; an adjustable cover for said opening; ascreen-partition Within said receptacle; a steam pipe havingdeliveryopenings along the same arranged below said partition; supplyand exhaust pipes for said delivery-pipe; means for controlling saidsupply and exhaust pipes; and a drip for said receptacle, for thepurpose specified.

8. In a paper-dampening device for calendering-machines, the combinationof a receptacle open at the top; an adjustable cover for said opening; ascreen-partition Within said receptacle; a steampipe havingdeliveryopenings along the same arranged below said partition; supplyand exhaust pipes for said delivery-pipe means for controlling saidsupply and exhaust pipes, for the purpose specified.

9. In a paper-dampening device for calendering-machines, the combinationof a receptacle open at the top; a screen-partition within saidreceptacle; a steam-pipe having de= livery-openings along the samearranged below said partition; supply and exhaust pipes for saiddelivery-pipe; means for controlling said supplyand exhaust pipes, forthe purpose specified.

10. In a paper-dampening device for calendering-machines, thecombination of a recep tacle open at the top; an adjustable cover forsaid opening; a screen-partition within said receptacle; a steam -pipehaving deliveryopenings along the same arranged below said partition;supply and exhaust pipes for said delivery-pipe, for the purposespecified.

11. In a paper-dampening device for calendering-machines, thecombination of a receptacle open at the top; a screen-partition withinsaid receptacle; a steam-pipe having delivery-openings along the samearranged below said partition; supply and exhaust pipes for saiddelivery-pipe, for the purpose specified.

12. In a paper-dampening device for calendoling-machines, thecombination of a recep tacle having an opening at the top thereof; meansfor controlling the size of said openin g a screen-partition within saidreceptacle; means for delivering steam to said receptacle beneath saidscreen; and means for controlling the supply of steam delivered, for thepurpose specified.

13. In a paper-dampening device for calenv

